Always begin by washing the metal castings in warm, soapy water. Rinse well and let dry. This will remove any remaining mold release agent and allow the glue and paint to adhere better.
Glue Metal Castings with fast-setting epoxy or cyanoacrylate adhesive (super glue).
When using super glue, a good bond depends on surface contact. Super glue is not filler-type glue. Use sparingly, too much glue will make a poor bond. Apply a tiny drop onto one of the parts being glued, then hold parts together for about 10 seconds. For larger Castings, hold parts together and apply a small drop of glue where parts meet. Capillary action allows the glue to seep into the contact area, creating a strong bond.
Allow glue to dry completely before moving to the next construction step.
If the metal castings were painted prior to assembly, be sure to scrape paint off glue points.